Revise command boolean flags

* use --enable|--disable form for boolean 'enabled' value
* clean up logging strings

Change-Id: Ib4016bbef1763c27ec5a9edf36b926dc0d0b265c

openstackclient/shell.py

@@ -50,7 +50,7 @@ def env(*vars, **kwargs):
 
 class OpenStackShell(App):
 
-    CONSOLE_MESSAGE_FORMAT = '%(levelname)s: %(message)s'
+    CONSOLE_MESSAGE_FORMAT = '%(levelname)s: %(name)s %(message)s'
 
     log = logging.getLogger(__name__)